Consolidated Statements of Income - USD ($) $ in Millions |
12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
May 31, 2021 |
May 31, 2020 |
May 31, 2019 |
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| Income Statement [Abstract] | ||||||||||||||||
| REVENUE | [1] | $ 83,959 | $ 69,217 | $ 69,693 | [2] | |||||||||||
| OPERATING EXPENSES: | ||||||||||||||||
| Salaries and employee benefits | 30,173 | 25,031 | 24,776 | |||||||||||||
| Purchased transportation | 21,674 | 17,466 | 16,654 | |||||||||||||
| Rentals and landing fees | 4,155 | 3,712 | 3,360 | |||||||||||||
| Depreciation and amortization | 3,793 | 3,615 | 3,353 | |||||||||||||
| Fuel | 2,882 | 3,156 | 3,889 | |||||||||||||
| Maintenance and repairs | 3,328 | 2,893 | 2,834 | |||||||||||||
| Business realignment costs | 116 | 320 | ||||||||||||||
| Goodwill and other asset impairment charges | 435 | |||||||||||||||
| Other | 11,981 | 10,492 | 10,041 | |||||||||||||
| OPERATING EXPENSES | 78,102 | 66,800 | 65,227 | |||||||||||||
| OPERATING INCOME | 5,857 | [3] | 2,417 | [4] | 4,466 | [5] | ||||||||||
| OTHER (EXPENSE) INCOME: | ||||||||||||||||
| Interest expense | (793) | (672) | (588) | |||||||||||||
| Interest income | 52 | 55 | 59 | |||||||||||||
| Other retirement plans income (expense) | 1,983 | (122) | (3,251) | |||||||||||||
| Loss on debt extinguishment | (393) | |||||||||||||||
| Other, net | (32) | (9) | (31) | |||||||||||||
| OTHER (EXPENSE) INCOME | 817 | (748) | (3,811) | |||||||||||||
| INCOME BEFORE INCOME TAXES | 6,674 | 1,669 | 655 | |||||||||||||
| PROVISION FOR INCOME TAXES | 1,443 | 383 | 115 | |||||||||||||
| NET INCOME | $ 5,231 | $ 1,286 | $ 540 | |||||||||||||
| BASIC EARNINGS PER COMMON SHARE | $ 19.79 | $ 4.92 | $ 2.06 | |||||||||||||
| DILUTED EARNINGS PER COMMON SHARE | $ 19.45 | $ 4.90 | $ 2.03 | |||||||||||||
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| X | ||||||||||
- Definition Amount charged against earnings in the period for incurred and estimated costs associated with business realignment activities, such as voluntary severance costs and external professional fees, pursuant to a duly authorized plan. No definition available.
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| X | ||||||||||
- Definition Purchased transportation costs. No definition available.
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- Definition Rental expense for leased assets including aircraft, vehicles, equipment and facilities; as well as fees paid to an airport or other governmental agency for each aircraft landing. No definition available.
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| X | ||||||||||
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Fuel costs incurred that are directly related to goods produced and sold and services rendered during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- References No definition available.
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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